*{
    margin: 0;
    padding: 0;
}
.content-top{
    width: 100%;
    height: 10px;
}
.timeline {
display: flex;
margin: 0 auto;
flex-wrap: wrap;
flex-direction: column;
max-width: 700px;
position: relative;
}
.timeline__content-title {
font-weight: normal;
font-size: 45px;
margin: -10px 0 0 0;
transition: 0.4s;
padding: 0 10px;
box-sizing: border-box;
font-family: '华文中宋', sans-serif;
color: #fff;
}
.timeline__content-desc {
margin: 0;
font-size: 16px;
box-sizing: border-box;
color: rgba(255, 255, 255, .7);
font-family: '楷体', sans-serif;
font-weight: normal;
line-height: 25px;
}
.timeline:before {
position: absolute;
left: 50%;
width: 2px;
height: 100%;
margin-left: -1px;
content: "";
background: rgba(255, 255, 255, .07);
}
@media only screen and (max-width: 767px) {
.timeline:before {
left: 40px;
}
}
.timeline-item {
padding: 40px 0;
opacity: 0.3;
filter: blur(2px);
transition: 0.5s;
box-sizing: border-box;
width: calc(50% - 40px);
display: flex;
position: relative;
transform: translateY(-80px);
}
.timeline-item:before {
content: attr(data-text);
letter-spacing: 3px;
width: 100%;
position: absolute;
color: rgba(255, 255, 255, .5);
font-size: 13px;
font-family: 'Pathway Gothic One', sans-serif;
border-left: 2px solid rgba(255, 255, 255, .5);
top: 70%;
margin-top: -5px;
padding-left: 15px;
opacity: 0;
right: calc(-100% - 56px);
}
.timeline-item:nth-child(even) {
align-self: flex-end;
}
.timeline-item:nth-child(even):before {
right: auto;
text-align: right;
left: calc(-100% - 56px);
padding-left: 0;
border-left: none;
border-right: 2px solid rgba(255, 255, 255, .5);
padding-right: 15px;
}
.timeline-item--active {
opacity: 1;
transform: translateY(0);
filter: blur(0px);
}
.timeline-item--active:before {
top: 50%;
transition: 0.3s all 0.2s;
opacity: 1;
}
.timeline-item--active .timeline__content-title {
margin: -50px 0 20px 0;
}
@media only screen and (max-width: 767px) {
.timeline-item {
align-self: baseline !important;
width: 100%;
padding: 0 30px 150px 80px;
}
.timeline-item:before {
left: 10px !important;
padding: 0 !important;
top: 50px;
text-align: center !important;
width: 60px;
border: none !important;
}
.timeline-item:last-child {
padding-bottom: 40px;
}
}
.timeline__img {
max-width: 100%;
box-shadow: 0 10px 15px rgba(0, 0, 0, .4);
border-radius: 10px;
}
.timeline-container {
width: 100%;
position: relative;
padding: 80px 0;
transition: 0.3s ease 0s;
background-attachment: fixed;
background-size: cover;
}
.timeline-container:before {
position: absolute;
left: 0;
top: 0;
width: 100%;
height: 100%;
background: rgba(0,0,0,0.6);
content: "";
}
.timeline-header {
width: 100%;
text-align: center;
margin-bottom: 80px;
position: relative;
}
.timeline-header__title {
color: #fff;
font-size: 58px;
font-family: '华文中宋', sans-serif;
font-weight: normal;
margin: 0;
}
.timeline-header__subtitle {
color: rgba(255, 255, 255, .5);
font-family: '华文中宋', sans-serif;
font-size: 16px;
letter-spacing: 5px;
margin: 10px 0 0 0;
font-weight: normal;
}
.demo-footer {
padding: 60px 0;
text-align: center;
}
.demo-footer a {
color: #999;
display: inline-block;
font-family: Cardo;
}